3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $functions=get_defined_functions(); echo $functions["internal"][2019];
Output for 5.3.0 - 7.2.0
Notice: Undefined offset: 2019 in /in/G1YlM on line 4
Output for 4.3.0 - 5.2.17
Notice: Undefined offset: 2019 in /in/G1YlM on line 4